US4539397AExpiredUtility

(Alkoxydiazo)halobenzeneacetonitriles

34
Assignee: ETHYL CORPPriority: Apr 25, 1983Filed: Jul 27, 1984Granted: Sep 3, 1985
Est. expiryApr 25, 2003(expired)· nominal 20-yr term from priority
Inventors:Venkataraman Ramachandran
C07C 255/00
34
PatentIndex Score
0
Cited by
6
References
2
Claims

Abstract

The coupling of an aminohalobenzeneacetonitrile with a benzene compound in the presence of an alkyl nitrite to form a halobiphenylacetonitrile via a diazo intermediate is improved by conducting the reaction at a temperature of about 0°-15° C. until diazotization of the aminohalobenzeneacetonitrile is substantially complete. Use of the low diazotization temperature leads to an increased yield of halobiphenylacetonitrile.

Claims

exact text as granted — not AI-modified
I claim: 
     
       1. A diazo compound corresponding to the formula: ##STR4## wherein R is hydrogen or an alkyl group, R' is an alkyl group, and X is halo. 
     
     
       2. A diazo compound corresponding to the formula: ##STR5## wherein R' is an alkyl group of 1-6 carbons.

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